Honeywell Switch L404T Users Manual 71 2429 1
PRESSURETROL L404F L404FTV_pd_EN
L404V to the manual 12d849a6-df7e-4fdb-b003-dfd047f6b0a8
2015-01-23
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L404F,T,V PressureTrol® Controllers PRODUCT DATA FEATURES • Models available in a series of control ranges, and pressure scales in kPa and psi. • All models automatically reset and have an adjustable differential. • Models have snap switch to open or close a circuit on a pressure rise. • Case has a clear plastic cover so setpoints can be observed. • 1/4 inch—18 NPT connection for pipe on diaphragm assembly. • Ground screw terminal. L404F: • Controllers may be used with steam, air, or noncombustible gases, or fluids noncorrosive to the pressure sensing element. L404T: APPLICATION L404F PressureTrol® Controllers provide operating control with automatic limit protection for pressure systems of up to 2070 kPa, or 300 psi. • High pressure limits, break a circuit on oil pressure rise above setpoint. L404V: • Low pressure limits, makes a circuit on oil pressure rise above setpoint. L404T,V PressureTrol® Controllers are for use on oil burner systems for pressures up to 1035 kPa or 150 psi. Contents Application ........................................................................ Features ........................................................................... Specifications ................................................................... Ordering Information ........................................................ Installation ........................................................................ Settings and Adjustments ................................................. Checkout .......................................................................... ® U.S. Registered Trademark © 2004 Honeywell International Inc. All Rights Reserved 1 1 2 2 3 6 7 71-2429—2 L404F,T,V PRESSURETROL® CONTROLLERS SPECIFICATIONS Model: L404F,T,V PressureTrol® Controllers. See Table 1. Table 1. Models with kPa—psi. kPa Model Number L404F1060 psi 15 to 100 2 to 15 L404F1078 35 to 350 L404F1094 140 to 2070 L404F1102 Maximum Diaphragm pressure Subtractive Differentiala Operating Ranges kPa psi 15 to 40 2 to 6 5 to 50 40 to 100 20 to 300 140 to 345 kPa psi 170 25 6 to 14 590 85 20 to 50 2410 350b 70 to 1035 10 to 150 70 to 150 10 to 22 1550 225 c L404F1219 15 to 100 2 to 15 15 to 40 2 to 6 170 25 L404F1243c 35 to 350 5 to 50 40 to 100 6 to 14 590 85 L404F1227c 70 to 1035 10 to 150 70 to 150 10 to 22 1550 225 L404F1235c 140 to 2070 20 to 300 140 to 345 20 to 50 2410 350b L404F1300c 415 to 1240 60 to 180 40 fixed 6.0 Fixed 1550 225 25 L404F1326 0 to 100 0 to 15 15 to 40 2 to 6 170 L404F1334 0 to 350 0 to 50 40 to 100 6 to 14 590 85 L404F1342 35 to 1000 5 to 145 70 to 150 10 to 22 1550 225 L404F1359 70 to 2000 10 to 290 140 to 345 20 to 50 2410 350b L404F1367 7 to 55 1 to 8 5 to 14 0.75 to 2 170 25 L404F1375d 35 to 350 5 to 50 40 to 100 6 to 14 590 85 L404F1383d 70 to 1035 10 to 150 70 to 150 10 to 22 1550 225 L404F1391d 140 to 2070 20 to 300 140 to 345 20 to 50 2410 350b L404F1409d 15 to 100 2 to 15 15 to 40 2 to 6 170 25 L404T1055 35 to 350 5 to 50 40 to 100 6 to 14 590 85 L404T1063 70 to 1035 10 to 150 70 to 150 10 to 22 1550 225 L404V1087 70 to 1035 10 to 150 70 to 150 10 to 22 1550 225 L404V1095d 35 to 350 5 to 50 40 to 100 6 to 14 590 85 d a Nominal at midscale operating range. Brass bellows instead of stainless steel diaphragm. c Models with 1/4-19 BSPT thread instead of 1/4-18 NPT thread. d Make-on-rise models with terminal B omitted for miswiring compliance. b ORDERING INFORMATION When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the TRADELINE® Catalog or price sheets for complete ordering number. If you have additional questions, need further information, or would like to comment on our products or services, please write or phone: 1. Your local Honeywell Automation and Control Products Sales Office (check white pages of your phone directory). 2. Honeywell Customer Care 1885 Douglas Drive North Minneapolis, Minnesota 55422-4386 In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9. International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France, Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A. 71-2429—2 2 L404F,T,V PRESSURETROL® CONTROLLERS Table 2. Conversion Table. Operating Range Conversions kg/cm2 0.1 to 1.05 Subtractive Differential Conversions kPa kg/cm2 psi 15 to 100 2 to 15 0.15 to 0.4 kPa psi 15 to 40 2 to 6 0.4 to 3.5 35 to 350 5 to 50 0.4 to 1.0 40 to 100 6 to 14 0.7 to 10.0 70 to 1035 10 to 150 0.7 to 1.6 70 to 150 10 to 22 1.5 to 20.0 140 to 2070 20 to 300 1.5 to 3.5 150 to 300 20 to 50 Mounting Means: 1/4 inch-18 NPT connection on diaphragm assembly; or surface mounts using holes in back of case. Table 3. Switch Ratings (Amperes). Switch State 120 Vac 240 Vac Dimensions: See Fig. 1. Full Load 8.0 5.1 Locked Rotor 48.0 30.6 Pressure Sensing Element: Stainless steel diaphragm (140 to 2070 kPa models) has brass bellows. Maximum Ambient Temperature: 66°C (150°F). Also, refer to note under Mounting. Adjustment Means: Screws on top of control case. Scales are marked in psi or kPa. 3-1/4 (83) Switching Action: Snap switch breaks R-B (closes R-W) on pressure rise. Make-on-rise devices omit terminal B. Grounding Means: Ground screw terminal marked with a circled ground symbol. Accessories: 14026 Steam Trap (118023 for BSPT models). 33312B Knurled Knob—fits on top of adjusting screws. 129564 Range Stop—range stop screw, Part No. 107194, and wrench, Part No. 23466, to limit setpoint range. 4-1/2 (115) 1 4-11/32 (111) 2-3/4 (70) 1-61/64 (50) DIFFERENIAL ADJUSTMENT SCREW 3-7/8 (99) HOLE FOR 1/2 INCH CONDUIT DIMENSION "A" (SEE TAB) 3-3/4 (95) 1-3/16 (30) PSI RANGE 2 TO 15 5 TO 50 10 TO 150 20 TO 300 13/16 (21) MAIN SCALE ADJUSTMENT SCREW 3/16 X 11/32 (5 X 9) KNOCKOUT DIMENSION "A" 123 126 126 146 1-15/16 (49) 1-13/16 (46) CLEAR PLASTIC COVER 1-1/16 (27) 1/4 –18 NPT 2-1/8 (54) 1 1-1/2 (38) 1 15 TO 100 kPa (2 TO 15 PSI) SCALE MODELS ONLY. M19635B Fig. 1. L404F,T,V approximate dimensions in inches (millimeters in parentheses). INSTALLATION 3. When Installing This Product… 1. 2. Read these instructions carefully. Failure to follow them could damage the product or cause a hazardous condition. Check on the ratings given in the instructions and 3 4. marked on the product to make sure the product is suitable for your application. Installer must be a trained, experienced service technician. After installation is complete, check out the product operation as provided in these instructions. 71-2429—2 L404F,T,V PRESSURETROL® CONTROLLERS Remote Mounting IMPORTANT When making pipe connections, use pipe dope sparingly to seal the joints; any excess dope may clog the small hole in the fitting and prevent the controller from operating properly. Excessive vibration at the boiler may affect the operation of the L404F. In these cases, the L404F should be remotely located, subject to the following: 1. Location and Mounting (L404F) Locate the L404F where the ambient temperature will not exceed 66°C (150°F). The L404F can be mounted near the pressure gauge, at a remote location, in a fitting provided by the boiler manufacturer, or in a special mounting on low water cutoffs. The L404F should always be mounted above the water line in steam boiler applications. NOTE: For accurate operation, supplemental heat should be added to installations where temperatures fall below -29°C (-20°F). A steam trap must be connected between the L404F and the boiler (see Fig. 2) to prevent boiler scale and corrosive vapors from attacking the elbows or diaphragm. PRESSURE CONTROLLER PRESSURE GAUGE 1 14026 STEAM TRAP (SIPHON LOOP) Location and Mounting (L404T,V) Location Mount the oil pressure controller directly on the main pipe. Insert a tee in the pipe line, and connect a pipe nipple of appropriate size to the tee (see Fig. 4). Screw the hexagonal fitting (1/4-18 NPT internal thread) of the pressure controller to the pipe nipple. To avoid leaks and damage to the case, use a parallel jaw wrench on the hexagonal fitting close to the pipe nipple. Do not tighten the pressure controller by hand by holding the case. 1/4 IN. BLACK IRON PIPE WITH 1/4 - 18 NPT EXTERNAL THREADS ON BOTH ENDS AND 2-1/4 IN. DIAMETER LOOP. M8934B Fig. 2. Steam trap mounting. Pressure Gauge Mounting To mount beside a pressure gauge, remove the gauge, and install in its place the steam trap with a tee on top. Mount the PressureTrol® unit and pressure gauge on the side of the tee by means of nipples and elbows (see Fig. 2). MAIN OIL LINE If it is not convenient to mount the L404F adjacent to the pressure gauge, install a steam trap at the location recommended by the boiler manufacturer, then screw the device directly to the steam trap. Mounting BOILER 1 Boiler Mounting NOTE: For most accurate operation, supplemental heat should be added to installations where the temperature falls below -20°F (-29°C).These controllers can be mounted at any location in the oil supply line, depending on the application. Typical locations are shown in Fig. 3. The low oil pressure controller should be located upstream from the safety shutoff valve(s). In a downstream location, there would be zero pressure when the burner is not running and the safety shutoff valve(s) is (are) closed. This could prevent startup or require manual reset every time the burner is started. The high oil pressure controller should be located as near to the burner as possible. TEE 4-1/2 TO 5-1/2 (114.3 TO 139.7) 2. 3. All piping must be suitable and properly pitched to drain all condensation back to the boiler. The remote mounting must be solid. A steam trap must be used at one end of the piping. Make all pipe connections in accordance with approved standards. Use only a small amount of pipe compound to seal the connection joints. Excess pipe compound may clog the orifice in the pipe fitting and prevent the controller from operating properly. STRAINER MANUAL SHUTOFF VALVE OIL PUMP WITH PRESSURE RELIEF ATOMIZER LOW OIL LOW OIL PRESSURE TEMPERATURE RECIRCULATING CONTROLLER VALVE AND SAFETY SHUTOFF VALVE HIGH OIL PRESSURE CONTROLLER MANUAL SHUTOFF VALVE ATOMIZING MEDIUM (AIR OR STEAM) Fig. 3. Typical locations of pressure controllers in an oil burner system. 71-2429—2 4 TO OIL BURNER M17861 L404F,T,V PRESSURETROL® CONTROLLERS All wiring must comply with applicable codes and ordinances. All models have terminals (on the MicroSwitch® snap-acting switch) inside the cover and knockouts for conduit and cable. Refer to manufacturer installation and wiring instructions, if available, and to typical hookups shown in Fig. 6 to 10. OIL PRESSURE CONTROLLER (AT RIGHT ANGLES TO THE MAIN PIPE LINE) L404F PRESSURETROL HEXAGONAL FITTING R 2 W PIPE NIPPLE B PIPE WRENCH MAIN TEE (TURN TO LEVEL THE CONTROLLER) 24 VOLT RELAY L1 POWER (HOT) SUPPLY L2 1 MAIN PIPE LINE M17860 24 VOLT POWER SUPPLY Fig. 4. Mounting an oil pressure controller directly on the main pipe. 1 PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. Using with Preheated Oil When used with preheated oil, a siphon loop (part number 14026) must always be connected between the controller and the main pipe (see Fig. 5) to provide thermal buffering. 2 AS SHOWN, SWITCH OPENS ON PRESSURE RISE. REVERSE ACTING (MAKE ON PRESSURE RISE) UNITS ARE WIRED TO R-W TERMINALS AND TERMINAL B IS OMITTED. M19637A Fig. 6. L404F in low voltage relay circuit. OIL PRESSURE CONTROLLER LINE VOLTAGE THERMOSTAT L404F PRESSURETROL 2 R 4-1/2 TO 5-1/2 (114 TO 140) W B 14026 SIPHON LOOP 1 TEE MOTOR PREHEATED OIL SUPPLY LINE 1 L1 L2 (HOT) POWER SUPPLY 1 1/4 INCH BLACK IRON PIPE WITH 1/4-18 NPT EXTERNAL THREADS ON BOTH ENDS AND 2-1/4 IN. (57 MM) DIAMETER LOOP. M17858A Fig. 5. Mounting of a siphon loop, with approximate dimensions in in. (mm). 1 PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 2 AS SHOWN, SWITCH OPENS ON PRESSURE RISE. REVERSE ACTING (MAKE ON PRESSURE RISE) UNITS ARE WIRED TO R-W TERMINALS AND TERMINAL B IS OMITTED. WIRING M19638A Fig. 7. L404F in a typical 2-wire control circuit. WARNING Electrical Shock Hazard. Can cause severe injury, death or property damage. Disconnect the power supply before beginning wiring. More than one power supply disconnect may be required. 5 71-2429—2 L404F,T,V PRESSURETROL® CONTROLLERS B R-W B R-W CONTROL SET POINT B-R BREAKS (R-W MAKES) R R W B W B (OMITTED) DIFFERENTIAL (ADJUSTABLE) B-R MAKES (R-W BREAKS) B-R W L404T BREAKS ON PRESSURE RISE TO SET POINT SWITCH ACTION ON PRESSURE RISE L404V MAKES ON PRESSURE RISE TO SET POINT B-R W SWITCH ACTION ON PRESSURE FALL INDICATES CLOSED SWITCH CONTACTS. M1801B Fig. 8. L404T,V terminal blocks and internal schematics. M19639B Fig. 11. Operation of switch on pressure rise and fall. Setpoint Adjustment FLAME SAFEGUARD CONTROL OIL PRESSURE CONTROLLER MAIN OIL VALVE SOLENOID Turn the pressure adjusting screw on the top of the controller (Fig. 12) to adjust the setpoint. Turn the differential adjusting screw to the desired pressure difference between switch opening and switch closing. L2 M9789 NOTE: When the main scale setting is at the lower end of the operating range, the differential range will be less than the differential setting by approximately 20 percent. Fig. 9. Hookup of an oil pressure controller used on a single burner system with an integral oil pump. OIL PRESSURE CONTROLLER OTHER CONTROLLERS, LIMITS, AND INTERLOCKS DIFFERENTIAL ADJUSTING SCREW L1 (HOT) L2 L2 GROUND SCREW SCALEPLATES FLAME SAFEGUARD CONTROL PRESSURE ADJUSTING SCREW MAIN SCALE PRESSURE INDICATOR M9790 Fig. 10. Hookup of an oil pressure controller used on a single burner or multiburner system with an external oil pump. DIFFERENTIAL SETTING INDICATOR SETTINGS AND ADJUSTMENTS When the pressure at the control rises above the L404 setpoint, a circuit opens between the R-B terminals. During a pressure fall, R-B will close at the setpoint pressure minus the switch differential. For example, if a controller is set to differential B (see Fig.11) with a controller setpoint of A, R-B will open when the pressure rises to A. Then during a pressure fall, the R-B terminals will close when the pressure drops to C (A minus differential B). For make on rise applications, the switch is wired to R-W terminals. The R-W circuit will close on pressure rise to the setpoint. R-W will open again on a pressure drop past the switch differential. 71-2429—2 DIAPHRAGM ASSEMBLY OPERATING LEVER M19640A Fig. 12. view of L404 PressureTrol® Controller. Scaleplate Adjustment The L404F,T,V has been carefully calibrated during manufacture and should not require recalibration. However, if recalibration is necessary, remove the cover and loosen the setscrews which hold the scaleplate. Adjust the plate up or down, as required, to bring the device into calibration. Tighten the setscrews securely and replace the cover. 6 L404F,T,V PRESSURETROL® CONTROLLERS CHECKOUT After the controller has been installed, wired and adjusted, it should be tested with the system in operation. First, allow the system to stabilize. Then, observe the operation of the controller while raising and lowering its setpoint. Pressure should increase when the setpoint is raised and decrease when the setpoint is lowered. 7 Also, check the make and break points of the controller. If they do not agree with a separate, accurately calibrated pressure gauge, a slight adjustment of the scaleplate(s) may be necessary. Use accurate pressure testing equipment when checking out the controller. Do not rely on inexpensive gauges. The controllers are carefully calibrated at the factory. 71-2429—2 Automation and Control Solutions Honeywell International Inc. 1985 Douglas Drive North Golden Valley, MN 55422 Honeywell Limited-Honeywell Limitée 35 Dynamic Drive Scarborough, Ontario M1V 4Z9 71-2429—2 G.R. Rev. 09-04 www.honeywell.com
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